Vehicle-spring



C. BERGSTROIVI.

VEHICLE SPRING.

APPLICATION FILED 1AN.19, |916.

ll ,$29,695. la-t-ented Feb. 3, 1920.

cHnIsTIANBEnesrno-M, or, DENVER. Q.OLORAD.

VEHICLE-SPRING.

speeifieatimof Letters raient.

ratentedreli. a," 192.0;

Applieaton ledannary- 19, 1916. Serial No.1i'72i988.

lle itknownthat l; CHRISTIAN BnRos'rnoir, a citizen ofthe'United States,` residing at Denver,y infthe county ofDeniver and State of lColorado, have invented 'certain new and useful 4linlnioVeniernts in- `ii/Teh'icle-Sp1-iugs,.of

I which'ithe l'ollowing isla specification.

This iiiventioirlias reference to a vehicle sprir fr particularly adapted'rfor use on such' vehicl asv automobiles i and is i sol designed as towincrease the. Comfort offridingnin the vehicle whether the: latter leaded to its full *capacity or only partially loaded.'

The; disadvantages ol- "the springs :si ich as usually employed occur mostly from ,the fact tha-tthe saine springresistance is pres ent when the vehicle is unloaded or only partially loaded as when the fullloadis carried. The resultiistliat ifltli'e springs of the vehicle are designed to rid/efcomfortably when the vehicle is loaded the passengers are uncomfortable when the -vehicle unloaded duc to the stiff rebound action of the 'priugs and, if desig ed to carry a partial or average load comfortably the springs are too weak for a full or overload.

Therefore, one object of the present invention resides in the provision of a spring which, literally speaking7 weighs its load, or in other words, is so designed as to automatically i crease the spring resistance as the load increases or to automatically dccrease the spring resistance as the load de-I creases.

A further object of the invention is to arrange a series of graduated sets of springs above and below a master-spring so that increased load deflecting the master-spring in either direction is compensated for by a graduated increase of resistance on opposite sides of the said master-leaf.

lith the above and other objects in view, one specific embodiment of the invention 'whieh is shown in the accompanying drawing, will be hereinafter described.

In the drawings:

Figure l is a side elevation of the spring.

Fig. 2 is a transverse section on the line f2 2 of Fig. l; and

Fig. 3 is a fragmentary view in side elee ration showing, partly in section, the detail of one of the leaf connecting members.

The spring, as herein illustrated, comprises a master leaf l having, at each end thereof, awsuitable lload s connections Q/iiwhich may receive thefshaclrle'ipins or theilike, .not shown.r

ArrangedV onfeitfher; sic-le:4 of the: master leaffgand centrallyflooated avithrrespect theres. to are the: series ofvgraduated leaves Ax and B .which unay comprise. any desired Vnu-ii'ibe'r ai'idinay be soarrangedfasrto decrease in lengtlrasthey? recede; from therfinastieitleaf 1;"

The seriesfA.` coniprisesthie leaves 35;;4; 5: andl 6 decreasingv in:` lengt-hil in the:V order nain ed land, likewise, thenseries B comprises the lea-vesif, 4.", 5 and 65 also. `decreesingeinf length inil the order named.Y The ternii'ials or endsfof thesefleaves ytoandft to 65 are vcurved away:- froin the; vmaster leaff 5 l f sliown; Aboltf? fastenedfbyfanut S-passes centthrough: all" off the: saidi leaves maintaining;they sainev in i proper lasseml-iledy relations, Inl usethes spriirgwvill bewcelrf trally located on the usual chair, not shown, and which forms a fulcrum therefor. Each leaf of the series A and B has formed on its ends the curvilinear bearing surface 9. Connecting Vthe ends of the corresponding ends of the correspondingly placed leaves of each of the said series are the rectangular members C formed on two opposite sides into bearings l0 to receive the curvilinear surfaces 9, the other sides ll acting to prevent lateral displacement of the leaves relative to each other.

The operation of the spring is as follows:

The leaves are so proportioned and tensioned that, when carrying the liXed or constant load the spring will stand in the normal position, as shown in the drawing. However, as the load is increased, the vmaster leaf l will be deflected and first the connected leaves 3 anc 3, forming one pair will receive the master leaf l upon its terminals and then the pair 3-3 will supplement and increase the resistance of the spring as a whole, the pairs 4--4=, 5 5 and 6-6 successively and gradually coming into play and therebyv automatically increasing the spring resistance as the load increases and as the load diminishes the said pairs suc ce "vely become more or less idle. Also, it is to loe noted, that the shortest and stiifest pairs come into action last thus, at all times, insuring the enicieney of the spring which also acts as a shock absorber to gradually and effectively receive and absorb all shocks imparted thereto during travel of the vehicle.

While li have herein described a specifi@ embodiment oi the present invention, it is nevertheless to be 'specifically understood that the invention is not in any` Way limited thereby but that, in practice, such practical inodii'ications niiay be resorted to as fall Within the scope of the invention as deined in the appended claiins.

claiin:

l. in combination with a master-spring, a plurality of vsupplenientary springs arranged on opposite sides .ot said masterspring, and ineans connecting the said supplenientary springs on one side of* said master-spring with those on the other side thereof to forni a series or' graduated pairs of springs arranged to be successively brought into action by the deflection ot s id niastenspring in either direction.

2. in combination with a master-spring, a plurality of supplementary springs-arranged on opposite sides of said naasten Y spring` and having ends curved away from said master-spring, and means connectingv the said supplementary springs on one side o'l said inasteibspring with those on the other side thereof to torni a series ot' graduated pairs of springs arranged to be successively brought into action by the deiiection of said niaSterspring in either direction. l s

3. lin combination With a master-spring, a plurality of supplementary springs arranged on opposite sides of said masterspring, and ineans connecting the springs on one side with the corresponding springs on the other side lto forni a series or pairs of springs, said connecting nieans acting to successively bring theV Various pairs of springs into action upon the deiiection of the inaster-sIn-ing in either direction.

ln combination, a inasterspring and a plurality o1 supplementary springs arranged on opposite sides of said master spring in a series of pairs, said suppleinentary springs being so arranged in relation to each other and'to said master spring as -to cause said pairs to successively come into action upon deflection of the master spring in either direction.

ln testiinony whereof l have hereunto set hans in the presence oil:a tWo subscribing Witnesses.

CHRISTIAN BERGSTROM.

TWitnesses CHARLES ld. BELLER, R. L. ORN/Is. 

